scholarly journals Variation of Total Polyphenol and Polyphenol Oxidase Activity during Maturation of Mango Fruit(Mangifera indica L. 'Irwin') Cultured in a Plastic House.

2000 ◽  
Vol 6 (1) ◽  
pp. 59-61 ◽  
Author(s):  
Motoko UEDA ◽  
Katsuaki SASAKI ◽  
Kazunari INABA ◽  
Yoshihide SHIMABAYASHI
Keyword(s):  
Polyphenol Oxidase ◽  
Oxidase Activity ◽  
Mangifera Indica ◽  
Mango Fruit ◽  
Polyphenol Oxidase Activity ◽  
Total Polyphenol

Localization of polyphenol oxidase activity in the lamellae and membrane-bound inclusions of etiolated soybean hypocotyl chloroplasts

1986 ◽  
Vol 64 (8) ◽  
pp. 1675-1681 ◽  
Author(s):  
G. Lazarovits ◽  
B. Singh
Keyword(s):  
Polyphenol Oxidase ◽  
Oxidase Activity ◽  
Guard Cells ◽  
Chemical Fixation ◽  
Polyphenol Oxidase Activity ◽  
Total Polyphenol ◽  
Parenchyma Cells ◽  
Cell Layers ◽  
Glycine Max L ◽  
Membrane Bound

Localization for polyphenol oxidase was carried out on 6-day-old etiolated soybean (Glycine max (L.) Merr.) tissue. Light and electron microscope observations of tissues exposed to the substrate L-dihydroxyphenylalanine after chemical fixation revealed that polyphenol oxidase activity was present in the lamellae and membrane-bound inclusions of chloroplasts. Inhibitors of polyphenol oxidase, diethyldithiocarbamate and phenylhydrazine, prevented formation of the reaction product. Only plastids in epidermal and associated cortex collenchyma cell layers contained inclusions and enzyme activity. Most guard cells and all cortex parenchyma cells were devoid of both. Homogenates of epidermal strips were shown to contain 95–99% of the total polyphenol oxidase activity present in hypocotyls.

Polyphenol oxidase activity staining in polyacrylamide electrophoresis gels

1997 ◽  
Vol 34 (2) ◽  
pp. 155-159 ◽  
Author(s):  
Antonio Rescigno ◽  
Francesca Sollai ◽  
Andrea C Rinaldi ◽  
Giulia Soddu ◽  
Enrico Sanjust
Keyword(s):  
Polyphenol Oxidase ◽  
Oxidase Activity ◽  
Polyphenol Oxidase Activity ◽  
Activity Staining ◽  
Polyacrylamide Electrophoresis

Mapping and allelic variations of Ppo-B1 and Ppo-B2 gene-related polyphenol oxidase activity in durum wheat

2015 ◽  
Vol 35 (2) ◽  
Author(s):  
Francesca Taranto ◽  
Giacomo Mangini ◽  
Antonella Pasqualone ◽  
Agata Gadaleta ◽  
Antonio Blanco
Keyword(s):  
Durum Wheat ◽  
Polyphenol Oxidase ◽  
Oxidase Activity ◽  
Polyphenol Oxidase Activity ◽  
Allelic Variations
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